/*
silverPDF is sponsored by Aleyant Systems (http://www.aleyant.com)

silverPDF is based on PdfSharp (http://www.pdfsharp.net) and iTextSharp (http://itextsharp.sourceforge.net)

Developers: Ai_boy (aka Oleksii Okhrymenko)

Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:

The above information and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR SPONSORS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

*/
#region PDFsharp - A .NET library for processing PDF
//
// Authors:
//   Stefan Lange (mailto:Stefan.Lange@pdfsharp.com)
//
// Copyright (c) 2005-2008 empira Software GmbH, Cologne (Germany)
//
// http://www.pdfsharp.com
// http://sourceforge.net/projects/pdfsharp
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
// DEALINGS IN THE SOFTWARE.
#endregion

using System;
using System.Runtime.InteropServices;
#if GDI
using System.Drawing;
#endif
#if WPF
using System.Windows.Media;
using System.Globalization;
#endif

#pragma warning disable 1591

namespace PdfSharp.Drawing
{
  /// <summary>
  /// Represents a two-dimensional vector specified by x- and y-coordinates.
  /// </summary>
  [Serializable]
  [StructLayout(LayoutKind.Sequential)]
  // [TypeConverter(typeof(VectorConverter)), ValueSerializer(typeof(VectorValueSerializer))]
  public struct XVector : IFormattable
  {
    public XVector(double x, double y)
    {
      this.x = x;
      this.y = y;
    }

    public static bool operator ==(XVector vector1, XVector vector2)
    {
      return vector1.x == vector2.x && vector1.y == vector2.y;
    }

    public static bool operator !=(XVector vector1, XVector vector2)
    {
      return vector1.x != vector2.x || vector1.y != vector2.y;
    }

    public static bool Equals(XVector vector1, XVector vector2)
    {
      if (vector1.X.Equals(vector2.X))
        return vector1.Y.Equals(vector2.Y);
      return false;
    }

    public override bool Equals(object o)
    {
      if ((o == null) || !(o is XVector))
        return false;
      XVector vector = (XVector)o;
      return Equals(this, vector);
    }

    public bool Equals(XVector value)
    {
      return Equals(this, value);
    }

    public override int GetHashCode()
    {
      return this.x.GetHashCode() ^ this.y.GetHashCode();
    }

    //public static XVector Parse(string source)
    //{
    //  IFormatProvider cultureInfo = CultureInfo.GetCultureInfo("en-us");
    //  TokenizerHelper helper = new TokenizerHelper(source, cultureInfo);
    //  string str = helper.NextTokenRequired();
    //  XVector vector = new XVector(Convert.ToDouble(str, cultureInfo), Convert.ToDouble(helper.NextTokenRequired(), cultureInfo));
    //  helper.LastTokenRequired();
    //  return vector;
    //}

    public double X
    {
      get { return this.x; }
      set { this.x = value; }
    }

    public double Y
    {
      get { return this.y; }
      set { this.y = value; }
    }

    public override string ToString()
    {
      return ConvertToString(null, null);
    }

    public string ToString(IFormatProvider provider)
    {
      return ConvertToString(null, provider);
    }

    string IFormattable.ToString(string format, IFormatProvider provider)
    {
      return ConvertToString(format, provider);
    }

    internal string ConvertToString(string format, IFormatProvider provider)
    {
      char numericListSeparator = ','; // TokenizerHelper.GetNumericListSeparator(provider);
      return string.Format(provider, "{1:" + format + "}{0}{2:" + format + "}", new object[] { numericListSeparator, this.x, this.y });
    }

    public double Length
    {
      get { return Math.Sqrt((this.x * this.x) + (this.y * this.y)); }
    }

    public double LengthSquared
    {
      get { return this.x * this.x + this.y * this.y; }
    }

    public void Normalize()
    {
      this = (XVector)(this / Math.Max(Math.Abs(this.x), Math.Abs(this.y)));
      this = (XVector)(this / this.Length);
    }

    public static double CrossProduct(XVector vector1, XVector vector2)
    {
      return vector1.x * vector2.y - vector1.y * vector2.x;
    }

    public static double AngleBetween(XVector vector1, XVector vector2)
    {
      double y = vector1.x * vector2.y - vector2.x * vector1.y;
      double x = vector1.x * vector2.x + vector1.y * vector2.y;
      return (Math.Atan2(y, x) * 57.295779513082323);
    }

    public static XVector operator -(XVector vector)
    {
      return new XVector(-vector.x, -vector.y);
    }

    public void Negate()
    {
      this.x = -this.x;
      this.y = -this.y;
    }

    public static XVector operator +(XVector vector1, XVector vector2)
    {
      return new XVector(vector1.x + vector2.x, vector1.y + vector2.y);
    }

    public static XVector Add(XVector vector1, XVector vector2)
    {
      return new XVector(vector1.x + vector2.x, vector1.y + vector2.y);
    }

    public static XVector operator -(XVector vector1, XVector vector2)
    {
      return new XVector(vector1.x - vector2.x, vector1.y - vector2.y);
    }

    public static XVector Subtract(XVector vector1, XVector vector2)
    {
      return new XVector(vector1.x - vector2.x, vector1.y - vector2.y);
    }

    public static XPoint operator +(XVector vector, XPoint point)
    {
      return new XPoint(point.x + vector.x, point.y + vector.y);
    }

    public static XPoint Add(XVector vector, XPoint point)
    {
      return new XPoint(point.x + vector.x, point.y + vector.y);
    }

    public static XVector operator *(XVector vector, double scalar)
    {
      return new XVector(vector.x * scalar, vector.y * scalar);
    }

    public static XVector Multiply(XVector vector, double scalar)
    {
      return new XVector(vector.x * scalar, vector.y * scalar);
    }

    public static XVector operator *(double scalar, XVector vector)
    {
      return new XVector(vector.x * scalar, vector.y * scalar);
    }

    public static XVector Multiply(double scalar, XVector vector)
    {
      return new XVector(vector.x * scalar, vector.y * scalar);
    }

    public static XVector operator /(XVector vector, double scalar)
    {
      return vector * (1.0 / scalar);
    }

    public static XVector Divide(XVector vector, double scalar)
    {
      return vector * (1.0 / scalar);
    }

    public static XVector operator *(XVector vector, XMatrix matrix)
    {
      return matrix.Transform(vector);
    }

    public static XVector Multiply(XVector vector, XMatrix matrix)
    {
      return matrix.Transform(vector);
    }

    public static double operator *(XVector vector1, XVector vector2)
    {
      return vector1.x * vector2.x + vector1.y * vector2.y;
    }

    public static double Multiply(XVector vector1, XVector vector2)
    {
      return vector1.x * vector2.x + vector1.y * vector2.y;
    }

    public static double Determinant(XVector vector1, XVector vector2)
    {
      return vector1.x * vector2.y - vector1.y * vector2.x;
    }

    public static explicit operator XSize(XVector vector)
    {
      return new XSize(Math.Abs(vector.x), Math.Abs(vector.y));
    }

    public static explicit operator XPoint(XVector vector)
    {
      return new XPoint(vector.x, vector.y);
    }

    internal double x;
    internal double y;
  }
}